Ive got these nasty peaks at 250 Hz. So, I simply set about making a notch filter to smooth out the peak. Unfortunately, 400 Hz is rather sensitive, and I want to maximize LFE if I can. (this is the reason I havent just used a highpass filter) Using the parallel notch filter equasions, Ive come up with component values, which seem to not help 250 and cause a sinkhole at 400. trying to reason with it and try various inductor and capacitance values, nothing seems to help, only worsen the peak. The only thing I can think of is that the resistance I need is between 3 and 6 ohms. My inductors have a combined resistance of far less than 3 ohms. is this what is causing my filter to fail? If so, what cna I do? eliminating all resistors from the filter still gives me about an ohm and a half resistance in the filter due to component DCR, and I cant increase resistance by adding resistors! adding resistors in series with the inductors within the notch but not in parallel does nothing constructive. What can I do?